/Engine/Source/Runtime/AnimGraphRuntime/Public/BoneControllers/AnimNode_RigidBody.h
Settings for the system which passes motion of the simulation's space into the simulation. This allows the simulation to pass a fraction of the world space motion onto the bodies which allows Bone-Space and Component-Space simulations to react to world-space movement in a controllable way.
template<> struct TIsPODType< FSimSpaceSettings >